loongson/pypi: links for bl-imp

loongson/mirror bl-imp-0.1.1-1.tar.gz
loongson/mirror bl_imp-0.1.1-1-py3-none-any.whl
loongson/mirror bl-imp-0.1.tar.gz
loongson/mirror bl_imp-0.1-py3-none-any.whl